I am not so sure. Everyone knows that CUDA is a core competency of Nvidia and they have stuck to it for years and years refining it, fixing bugs, and making th

I am not so sure. Everyone knows that CUDA is a core competency of Nvidia and they have stuck to it for years and years refining it, fixing bugs, and making the experience smoother on Nvidia hardware. On the other hand, AMD has not had the same level of commitment. They used to sing the praises of OpenCL. And then there is ROCm. Tomorrow, it might be something else. Thus, Nvidia CUDA will get a lot more attention and tuning from even the portability layers because they know that their investment in it will reap dividends even years from now, whereas their investment in AMD might be obsolete in a few years. In addition, even if there is theoretical support, getting specific driver support and working around driver bugs is likely to be more of a pain with AMD.